Brush



c.` E. FROST May 21, 1935.

BRUSH Filed OC'L. 14, 1930 vl A A Patented May 21, 1935 r acuario 1 PATENT o-FFlcE BRUSH Clinton E. Frost, Youngstown, Ohio, assigner The` Osborn Manufacturing Company,

Cleveland, Ohio, a corporation of Ohio Application October 174, 1930, Serial No. 488,586

` Claims.

`gether, the entire assembly producing a cylindrical brush adapted to be rotated by a machine,` for many types ofcleaning, polishingl and the like.

Heretofore brushes have been manufactured having radially disposed laments of Wire, tampico, or other metallic or fiber strands, there being at present two generally recognized ways of applying the filaments.

In the first of these, the laments are twisted vtogether between series of circumferally extending wires, and the friction created by this twisting` is relied upon for retaining them in place.4 The twisted wire Vis formed into a ring, and this ring supported` in' some type of disc-like hub.

This type of brush possesses several disadvantages, for instance-.it is extremely diicult to distribute the laments uniformly, and is commercially impracticable to produce a properly.'

balanced brush. Moreover, the operation of twisting the filaments into the wires isexpensive and the laments are not as effectively securedkas is desirable. This type of fastening isentirely unsuited for vegetable ber, being useful only for securing metal Wires.

The second type of brush is that which is generally known as tufted. In this type, the filaments are bent upon themselves to form bunches l of Substantially hairpin-shaped strands. The bent portion or bight of each bunch is inserted and secured in some manner in the hub member.

While a tufted brush maybe well balanced and the tufts securely locked in position, the operations and parts involved are relatively expensive.

The thickness or amount of ll of both types is limited, the maximum thickness of prior types being only from ,-Sg to 1/2 inch.

It is an object of the present invention to eliminate the disadvantages inherent in prior types of rotary brushes.

Other objects will hereinafter appear.

The invention will be better understood from the description of four practical embodiments 4thereof illustrated in the accompanying drawing,

in which:

Figure 1 is a central sectional View of the component parts of one form of brush embodying the invention;

Figure 2y is a fragmentary view similar to Figure 1 showing the parts in their finished rela-` tion;

Figure 3 is a side elevation of one of the parts of the brush of Figures 1 and 2;

Figure 4 is a side elevation of another part of the brush of Figures 1 and 2;

` Figure 5 is a fragmentary view similar to Figure 1 of another embodiment of theinvention;

Figure 6 is aview similar to Figure 2 of the second embodiment; Y y Figures 7 and 8 are views similar to Figures 1 and 2 of a third embodiment of the invention;

Figure 9 is a view similar to Figures 3 and 4 of a partof the third embodiment; and r Figures 1() and 11 are views similar to Figures l and 2l but showing the fourth embodiment of the invention.

:In the embodiment showing Figures l to 4, the brush consists of an annularly arranged series of looped filaments l, the loops being inwardly direoted, so that the laments lie in a substantially radial direction. A retaining wire or ring is passed about within the loo-ps, and the loops ofA wire received between a side'plate Sand a ring 4 each of which is provided with inwardly extending prongs 5. The plate has a central perforation 6 for thefreception of a shaft ork arbor upon which the brush is to be supported, and struck from its surface are lugs l' arranged to project through the opening in the ring. i

With the disc and ring arranged as shown in` Figure 1, the filaments and wire ring are inserted, and the disc and plate pressed together into the position shown in Figure 2, the lugs at the same time being bent over as indicated at 8 to clamp the ring to the disc. It will be apparent that the prongs are pressed into the tufts of iilaments, and, if longer than the distance between the plate and ring, are clinched over, retaining the wire within the space between the ring and plate, and preventing radial or circumferential displacement of the filaments.

The clinching of the ends of the prongs is not essentia-l to the proper retention of the laments and wire ring, but does not impair the iirm retention of these elements. It is, therefore possible to use a single length of prong for brushes of different thicknesses, the prongs bending over in the case of the narrower brushes but lying straight in the case of the wider sections. This permits seotions to be produced of much greater thickness than has been possible heretofore, fills of an inch or more in thickness being firmly retained.

By the invention above described, a brush or section is produced which is better balanced than prior sections, is easier and more economical to manufacture, retains the iilaments better, and in which, due to thicker fills, requires less sections for a given length of assembled brush.

In the embodiment illustrated in Figures 5 and 6, lugs 9 are formed upon the inner periphery of the ring l, and these lgs are arranged to extend through slots ll in the plate l2. The parts are assembled as in the embodiment above described, and the lugs bent over as at I3 to lock the parts together.

In both the above described embodiments, the central portion of the plate is inwardly offset as at l 5, so thatthe support afforded at the central aperture lies in a plane passing through the centers of the tufts of filaments.

Figures 7, 8 and 9 illustrate an embodiment in which no central disc-like portion is used, but which is formed of two side rings similar to the ring l@ of Figures 5 and 6, each ring being provided with a series of laterally extending lugs 9, the lugs being spaced apart, so that when the rings are placed together the lugs on one ring will alternate with those of the other.

The filaments and retaining wire are assembled as in the two embodiments above described and the rings pressed together as shown in Figure S, at which time the lugs are clinched or clamped over the opposing rings to retain the members in position.

In Figures 10 and ll two plain rings similar to that illustrated in Figure 4 are used and in con- .lugs are clinched outwardly to overlie the inner -margins of the two rings, as will be readily apparent from Figure l1.

While I have described the illustrated embodiment of my invention in some particularity,

kthis is done by way of illustration only, it being obvious that many other embodiments will readily occur to those skilled in this art, and I doV not therefore limit myself to the precise details shown and described, but claim as my invention all embodiments, variations and modications comingV within the scope of the subjoined claims.

I claim:

1. In a rotary brush, an annular bristle body and a two-piece mounting therefor,l comprising a pair of annular side plates having spaced elongated tongues extending from the inner edges thereof, portions of the tongues extending normal to the plane of the plates to form a base support for the bristles, every tongue of each plate lying between two of the tongues of the other plate, the ends of the tongues of each plate being bent outwardly upon the other plate to hold the plates together, and the tongues forming a substantially continuous inner annular support for the bristle structure and preventing relative rotary movement between the two plates.

2. A rotary brush comprising an annular bristle body and mounting means for the body, comprising two side plate members, one of said members being annular and having a series of circumferentially spaced tongues at its inner peripheral edge arranged to form base supports for the bristles, and the other of said members having a corresponding series of openings arranged to receive the tongues, the ends of the tongues being bent over onto the member having said openings to clamp the two members together.

3. In a rotary brush, an annular bristle body, andmounting means for the body comprising a pair of side plates, at least one of said plates being annular in form and having a series of circumferentially spaced tongues extending from its inner peripheral edge, said tongues having a portion thereof` normal to the plane of the plate to form a support for the bristles, and the ends of said tongues being bent outwardly upon the other plate to hold the plates together, and portions of the other plate lying between the tongues, whereby relative rotation between the two plates is prevented.

4. In a rotary brush, an annular bristle body,V

anda two-piece mounting therefor, comprising a pair of annular side plates having spaced elongated tongues extending from the inner edges thereof, portions of the tongues extending normal to the plane of the plates to form a base support for the bristles, every tongue of each plate lying between two of the tongues of the other plata-the ends of the tongues of each plate being bent outwardly upon the other plate to hold the plates together.

CLINTON E. FROST. 

